Which fits your needs?
DeepClean: Mac users who want explained cleanup categories and developer-cache coverage.
WhatSize: Mac users who favor column browsing and integrated duplicate/cleanup tools.
Features, pricing, and workflow
Scroll across to compare
| Feature | DeepClean | WhatSize |
|---|---|---|
| Best fit | Mac users who want explained cleanup categories and developer-cache coverage. | Mac users who favor column browsing and integrated duplicate/cleanup tools. |
| Visualization | Category and large-file lists with safety ratings | Size-sorted columns and measurement views |
| Platforms and requirements | macOS 13+ | macOS 11+ (current vendor requirements) |
| Pricing and editions | Free scan and first gigabyte of cleanup; unlimited cleanup listed at $39 once per Mac. | Vendor lists $14.99 and a 30-day trial; upgrades may be priced separately. |
| Open source | No | No |
| Native macOS UI | Yes | Yes |
| Cleanup workflow | Select items for Trash; caution items require deliberate selection and acknowledgement. | Review the chosen cleaning or duplicate action before applying it. |
| Reports and portability | Retain deletion history and important decisions separately. The product overview does not document importing its records into another analyzer. | Preserve any saved measurements or reports supported by your version. The cited overview does not establish an import format shared with NullDisk. |
DeepClean: what stands out
A good fit for Mac users who want explained cleanup categories and developer-cache coverage.
DeepClean: strengths
- Safe/Review/Caution categories and item explanations
- Developer toolchain cleanup and content-matched duplicates
- Trash-first cleanup with deletion history
Considerations
- Unlimited cleanup requires a paid per-Mac license
- Category judgments still depend on your workflow
- Primarily category-based cleanup rather than a disk map
WhatSize: what stands out
A good fit for Mac users who favor column browsing and integrated duplicate/cleanup tools.
WhatSize: strengths
- Size-sorted columns and detailed filtering
- Duplicate-file tools and cleanup categories
- Updates measurements as the filesystem changes
Considerations
- Paid license after the trial
- Cleanup categories still require your judgment
- Check upgrade terms separately from the initial purchase
For a useful comparison on your own drive, match the scan root, access permissions, and size mode. Chart style changes how you explore the results; it does not by itself establish measurement accuracy.
Common questions
When should I choose DeepClean?
A good fit for Mac users who want explained cleanup categories and developer-cache coverage. Free scan and first gigabyte of cleanup; unlimited cleanup listed at $39 once per Mac.
When should I choose WhatSize?
A good fit for Mac users who favor column browsing and integrated duplicate/cleanup tools. Vendor lists $14.99 and a 30-day trial; upgrades may be priced separately.
Will both apps show the same size?
Not necessarily. Match the scan root, permissions, exclusions, and logical/allocated-size mode. Hard links, APFS clones, snapshots, sparse files, and cloud placeholders can change totals. A reported size is not a guaranteed amount recovered after deletion.